Actually the pings you are speaking of put the arc very close to Pakistan....and if they flew a certain route...MH370 would be within less than an hour of Pakistan.
And the pings came from IMNARSAT....and the 40 degree satellite arc is very close to Pakistan.
and if that plane flew anywhere near Kazakistan or even Pakistan then US military radar in Afghanistan would have painted it. But they didn’t.
Furthermore there would have had to be a 9th ping if it flew from Kazakistan into Pakistan but there wasn’t.